How do I force objects to follow another object?
Hmmmmmm. Can't manipulate the model at. Try making a base mesh that fits the models shape, parent THAT to the model, add the watch and ring to that base mesh.  Delete the mesh but keep the accessories. This should. .."SHOULD" fix the axis problem as if the base is positioned properly, the watch and ring should inherit is rotation, scale and all that jazz from the mesh when you delete it but keep the watch and ring "IN" the initial mesh object.